diff options
Diffstat (limited to 'doc/language/function/cpsc-function-num_to_str.7.md')
| -rw-r--r-- | doc/language/function/cpsc-function-num_to_str.7.md | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/language/function/cpsc-function-num_to_str.7.md b/doc/language/function/cpsc-function-num_to_str.7.md index 8e895ee..9d9c071 100644 --- a/doc/language/function/cpsc-function-num_to_str.7.md +++ b/doc/language/function/cpsc-function-num_to_str.7.md @@ -7,13 +7,16 @@ cpsc-function-num_to_str - convert a number to text # SYNOPSIS ```text -NUM_TO_STR(number : INTEGER or REAL) RETURNS STRING +NUM_TO_STR(number : INTEGER or REAL) RETURNS DEFAULT STRING +NUM_TO_STR(number : INTEGER or REAL) RETURNS CHAR ``` # DESCRIPTION Provided by the standard string library, loaded and linked by default. +The function table in the 9618 winter 2025 insert allows INTEGER or REAL input and STRING or CHAR output. Context selects the result type; the compiler's DEFAULT extension selects STRING when context supplies none. CHAR results use the same formatting as STRING results and must contain exactly one character, otherwise a catchable runtime error is raised. Thus INTEGER 7 can return '7', but INTEGER 12 and REAL 7.0 cannot return CHAR. + Format INTEGER as signed decimal text and REAL in the same shortest round-trip form that OUTPUT prints. The text is the shortest decimal text that reads back as the same value (as Python's `repr`): fixed notation with at least one fractional digit when 1e-4 <= |x| < 1e16 (`2.0`, `87.5`, `0.0001`), otherwise scientific notation with an exponent of at least two digits (`1e-07`, `1.5e-07`, `1e+16`); special values print as `-0.0`, `inf`, `-inf` and `nan`. # EXAMPLE @@ -24,4 +27,4 @@ OUTPUT NUM_TO_STR(42), " ", NUM_TO_STR(3.5) # SEE ALSO -[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md). +[cpsc-language-overview(7)](../cpsc-language-overview.7.md), [cpsc-keyword-default(7)](../keyword/cpsc-keyword-default.7.md), [cpsc-function-str_to_num(7)](cpsc-function-str_to_num.7.md). |